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What we like
Dry-run safety shut-off
Shatter-resistant glass
Adjustable thermostat
Keep in mind
Check the temperature with a separate thermometer
Pick the wattage for your tank size
Our in-depth look
Who it's for
Tropical tanks that need a steady temperature, especially in cool rooms.
Who should skip it
Coldwater fish such as goldfish usually don't need a heater.
Tips
Pick roughly 3–5 watts per gallon. Let the heater sit in the water for 30 minutes before plugging in, and check the temperature with a separate thermometer.
